Question

what is the difference between a chemical change and a physical change?

Explanation:

A chemical change results in the formation of new substances with different chemical properties, involving breaking and forming of chemical bonds. A physical change only alters physical properties like shape, state (solid - liquid - gas), or size, without changing the chemical composition of the substance.

Answer:

A chemical change creates new substances with different chemical properties by changing chemical bonds. A physical change only modifies physical properties without altering chemical composition.